Clicks Southdale manager Ntokozo's appalling behaviour

I am very disappointed to say the least with service I received from Clicks Pharmacy in Southdale shopping centre, I went to get reimbursed for the soft drinks that I bought last week, they were on the 3 for 2 special which is still on, I realised that nothing was subtracted when I was checking my receipt over the weekend and this morning I got a chance to go there. The manager, Ntokozo simple told me that "ke jewe" meaning I've lost out, no people's skills whatsoever and definitely no managerial skills, It was appalling to say the list. I am really disappointed at Clicks Southdale even the staff Members that were around they were shocked at the response.